# Tech Dive vs nDeco

The clearest difference is review sentiment: Tech Dive at 100% against nDeco's 0%. Tech Dive also leads on rating (5.0 vs 2.0) and update cadence (every 4 weeks vs every 7 months). nDeco's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Tech Dive sells 2 in-app purchases, starting at $0.99 per month. nDeco asks for nothing beyond the download.

Tech Dive holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 100% of Tech Dive's written reviews are positive against 0% of nDeco's.

Tech Dive ships an update every 4 weeks, nDeco every 7 months. The most recent releases landed on September 24, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | Tech Dive | nDeco |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tech-dive/id6483004689/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/ndeco/id6741527911/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 16 MB | 73 MB |
| Requires iOS | **17.0** | 17.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Skytip LLC](https://appshunter.io/developer/1569880600) | [Eyal Vardi](https://appshunter.io/developer/988684101) |

## What reviewers say

### Tech Dive

[App page](https://appshunter.io/ios/app/tech-dive/id6483004689)

This app helps plan scuba dives with various calculators for gas, depth, and air consumption. It supports metric and imperial units and offers advanced features through an in-app purchase.

**Highlights:** Dive planning calculators, Gas and air consumption calculations, Metric and imperial unit support, Depth and EAD calculations, Enriched Air-Nitrox mix calculation, Unit conversion tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $0.99 | per month |
| Plus Annual | $7.99 | per year |


### nDeco

[App page](https://appshunter.io/ios/app/ndeco/id6741527911)

Plan multi-segment dives with ease using U.S. Navy and Bühlmann decompression models. Get instant dive information, depth limit guidance, and surface interval recommendations for safe underwater adventures.

**Highlights:** Multi-segment dive planning, U.S. Navy & Bühlmann decompression models, Depth limit guidance, Instant dive information, Surface interval recommendations, Metric/imperial unit flexibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tech Dive free?

Tech Dive is free to download, with in-app purchases available.

### Is nDeco free?

nDeco is free to download, with no in-app purchases.

### Which has better reviews, Tech Dive or nDeco?

Tech Dive is rated higher. Tech Dive averages 5.0 out of 5 from 2 ratings, while nDeco averages 2.0 from 1 ratings.

### Do Tech Dive or nDeco have ads?

Neither Tech Dive nor nDeco shows ads.

### Which is updated more often, Tech Dive or nDeco?

Tech Dive ships an update every 4 weeks, and nDeco every 7 months. Most recently, Tech Dive was updated on September 24, 2026 and nDeco on June 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*